Tesco visited my campus. 1st round was online coding on HackerRank, with 2 questions of medium difficulty. Next 2 rounds was Technical and HR interviews.
Interviewer mostly asked question based on strengths mentioned CV and projects (in my case - OOP, DS, Algo). Some questions were asked from topics like Networks, even though it wasn't mentioned.
Even though the interviewer seemed satisfied by most of my answers, I wasn't called for next round.